"""
Middleware de logging HTTP — enregistre chaque requête avec structlog.

Exclut les endpoints de santé (/health, /metrics) pour réduire le bruit.
"""
import time
import logging
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.responses import Response

logger = logging.getLogger("http")

# Chemins exclus du logging
_EXCLUDED_PATHS = {"/health", "/health/detailed", "/metrics", "/favicon.ico"}


class LoggingMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request: Request, call_next) -> Response:
        if request.url.path in _EXCLUDED_PATHS:
            return await call_next(request)

        start = time.monotonic()
        client_id = getattr(request.state, "client_id", "anonymous")

        response = await call_next(request)

        duration_ms = int((time.monotonic() - start) * 1000)

        logger.info(
            "http.request",
            extra={
                "method": request.method,
                "path": request.url.path,
                "status": response.status_code,
                "duration_ms": duration_ms,
                "client_id": str(client_id),
            },
        )

        return response